Download topo maps for the US and some other countries in advance, so you won’t need cell coverage when navigating.

This uses many publicly available map sources as free downloads. It also has some additional content available as an in app purchase:

Boundary maps for 12 western states from the Bureau of Land Management(BLM) for $ 7.99. Great for hunters, hikers, and prospectors.

Content from US TrailMaps for $ 15.99, including:

Snowmobile Trail Maps for Snowmobiling enthusiasts,

ATV Trail Maps

Whitewater Trail Maps,

Equestrian Trail maps.

See these in the menu under More-> “Purchasing AddOns”.

You are welcome to try the DEMO version to make sure you like the maps in your country.

NOTE: If you’ve already purchased this or any paid app, you can install it at any time from ‘My Apps’ in the Android Market.

Use offline topo maps and GPS on hiking trails without cell service! The GPS in your Android phone can get its position from GPS satellites, and you don’t have to rely on your data plan to get maps. Have more fun and safe GPS adventures in the backcountry.

Preload offline topo maps, aerial photos, and road maps on your storage card, so they are ready when you need them for your GPS navigation. Many free map source are built into the app.